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a. Which of the following indicates reduction? Oxidation number     Electrons         Oxygen A. Decrease                Lose              Removal B. Decrease               Lose              Addition C.  Decrease              Gain               Removal D. Increase                Gain               Addition b. The reaction between iron(III) sulphate solution and sodium iodide solution can be represented by the ionic  equation below. 2Fe3+(aq) + 2I−(aq) → 2Fe2+(aq) + I2(aq) Which of the following shows the correct change in the oxidation number of iodine?

a. Which of the following indicates reduction? Oxidation number     Electrons         Oxygen A. Decrease                Lose              Removal B. Decrease               Lose              Addition C.  Decrease              Gain               Removal D. Increase                Gain               Addition b. The reaction between iron(III) sulphate solution and sodium iodide solution can be represented by the ionic  equation below. 2Fe3+(aq) + 2I−(aq) → 2Fe2+(aq) + I2(aq) Which of the following shows the correct change in the oxidation number of iodine?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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 a. Which of the following indicates reduction?

Oxidation number     Electrons         Oxygen
A. Decrease                Lose              Removal
B. Decrease               Lose              Addition
C.  Decrease              Gain               Removal
D. Increase                Gain               Addition

b. The reaction between iron(III) sulphate solution and sodium iodide solution can be represented by the ionic 
equation below.
2Fe3+(aq) + 2I−(aq) → 2Fe2+(aq) + I2(aq)
Which of the following shows the correct change in the oxidation number of iodine?
A. 0 to −2
B. 0 to −1
C. −1 to 0
D. −1 to −2

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